1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfe6b90cda2f75b19ea3b650aece68baa630c76575205adc7a10b1f19e9990b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adaf670c-3abe-45b8-8355-98cd07a1d775.json and https://artists.proofprofile.net/proofs/artist/adaf670c-3abe-45b8-8355-98cd07a1d775.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3319b75e5b924aa1292bc78716571581814c12aacab6c22b5e772ff741411d80. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5ipdTWv3St0ZGJ6WDniovn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5ipdTWv3St0ZGJ6WDniovn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351e9efcdc26008f74ba055fe7f91fb60fe9326bbbca2e8209ee620ff88e3534. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7zWiJm5D7qqb14Y5i2Iv87.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7zWiJm5D7qqb14Y5i2Iv87.
{"copyright_id":"0xc09cfd8197c60731cba511afe9ffbc7a10259fe6ef909cd5045d4afcbef5a9ec","isrc":"NLT2H2300905","name":"Too Late","registered_at":"2026-06-20T08:29:59Z","spotify_id":"34pTpDTaBNll2xTweUCX87","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09cfd8197c60731cba511afe9ffbc7a10259fe6ef909cd5045d4afcbef5a9ec. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/34pTpDTaBNll2xTweUCX87.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/34pTpDTaBNll2xTweUCX87.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdc9fb19e68315efc1720430d772b69b610fac7ad5f245bf606991ccf852b27. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0w1eGRB3ZRZg6WnEschHcW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0w1eGRB3ZRZg6WnEschHcW.
{"copyright_id":"0x41b245b9c2d407eac17adee7973419e5a094c072246558d9c327c53696c7c03c","isrc":"NLT2H2200889","name":"Day 'N' Nite - Turtleneck (UK) Remix","registered_at":"2026-06-06T11:06:24Z","spotify_id":"4nQWOmDsj2zWa1TSsJGwud","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b245b9c2d407eac17adee7973419e5a094c072246558d9c327c53696c7c03c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4nQWOmDsj2zWa1TSsJGwud.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4nQWOmDsj2zWa1TSsJGwud.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd3051d8afc675f17d0b4e2193a726554c6a28504242151beab27e093b3867a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4iotbVbywb4J0XT6D63A8V.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4iotbVbywb4J0XT6D63A8V.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef6c93a758f3df3abefc209e3229922d68871147d3354d87012c6265cfcc694. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0N7XyhroAYL0his46xxNyj.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0N7XyhroAYL0his46xxNyj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa384fb3fc86b4d36c646a7555392666c5072745d61915251c1897d31b355ea85. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1OVHv6vRSqa8FvSQkFR5M9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1OVHv6vRSqa8FvSQkFR5M9.
{"copyright_id":"0x14bc3990211cd4e40130bcdbb7bf1d8f408ac4ce8c03dd0caf568bc46e326417","isrc":"BEK012300072","name":"Time After Time","registered_at":"2026-06-07T17:27:40Z","spotify_id":"1Nc4gon5Nu3hL4Ou6kvrgz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bc3990211cd4e40130bcdbb7bf1d8f408ac4ce8c03dd0caf568bc46e326417. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1Nc4gon5Nu3hL4Ou6kvrgz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1Nc4gon5Nu3hL4Ou6kvrgz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6c66ebd99e505c021a7798365749af8e1c03c4eec1672bfe6d611b4cd8c149. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6qzo4iEdCsVcydvsoJP3IP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6qzo4iEdCsVcydvsoJP3IP.
{"copyright_id":"0x2c4ace926fdb77bc2b64b985787d0102bd112e391ed36d55cb24ac3373252837","isrc":"NLT2H2301029","name":"I Like It Like That","registered_at":"2026-06-08T13:07:17Z","spotify_id":"2A9OIPgagBILKFYQKiFzBX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4ace926fdb77bc2b64b985787d0102bd112e391ed36d55cb24ac3373252837. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2A9OIPgagBILKFYQKiFzBX.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2A9OIPgagBILKFYQKiFzBX.
{"copyright_id":"0xf7476a00cf661fdb89580c32a253f47839c9d7fb2e4e9336196543f976edfe49","isrc":"NLT2H2200786","name":"Cardiac Arrest [Toby Rose Remix]","registered_at":"2026-06-24T06:54:59Z","spotify_id":"6XGg8enHJoHbVqY5tm98fe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7476a00cf661fdb89580c32a253f47839c9d7fb2e4e9336196543f976edfe49. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6XGg8enHJoHbVqY5tm98fe.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6XGg8enHJoHbVqY5tm98fe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42133e700c91ea09bca975a02177b036ab342ef97f27eef3b31dc7a9a454e720. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0lwqjvQoMEoxQfMhMtOMKy.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0lwqjvQoMEoxQfMhMtOMKy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd182ef1448a8ef571ed4f675492f5b84377f64986086f8d52e551565c7e21edd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6sxX4dF7AyLXmhoBqvln9V.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6sxX4dF7AyLXmhoBqvln9V.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4725422c960499dad34fa6daca39e197a595f6b67d067f96089764b57b320d91. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4UkswY7pdzspKifOGrhzb8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4UkswY7pdzspKifOGrhzb8.